Free Shipping on orders of $49+ | Signup for Direct Rewards
Free Shipping on orders of $49+ | Free Store Pickup | Signup for Direct Rewards

The Mares X-Stream Fins are designed for power, comfort, and efficiency. After years of research and four patented innovations, Mares created a fin that reduces drag and boosts performance.
The Optimized Pivoting Blade (OPB) system keeps the blade at the best angle throughout your kick, delivering steady thrust with less effort. The super-channel blade pushes more water with less energy, so you get strong propulsion without tiring your legs.
The riddled foot pocket improves fit and reduces suction, while vents prevent drag. Made with durable tri-material construction, these open-heel fins are a great pick for divers who want high performance and all-day comfort.
* The Pink variant is available only with ABS Buckle
WARNING: Cancer and Reproductive Harm -- www.P65Warnings.ca.gov.
5 out of 5 stars
I purchased these fins and used them for the first time last weekend. I was getting fin foot from my previous pair and was advised by a associate that these would be better. These are very comfortable with the jelly like plastic around the toes and I did not get fin foot. I also noticed the design of the fins make swimming easier. Also, other divers were commenting on how easy I was to spot because of the fins appearance in poor visibility. Love these fins.
5 out of 5 stars
Excellent fins to go diving. I use to struggle with my old fins swimming and keeping up with the group. It makes so much of a difference having good quality fins comapred to cheap ones. I work less in the water and they are super comfortable. Plus they come in my favorite color which is pink ! Price wise ? pretty expensive but in the long run worth it. Wish it were jut a tad bit better in price wise.
5 out of 5 stars
Amazing fins! They take some getting used to as you don't feel the same drag on your foot as with other fins. I dive Scuba Pro Twin Jet fins in my home Puget Sound waters and they're great on my knees but way too heavy for a travel fin. They also don't have that much thrust when you dig in and kick hard. I tried these last week in FL on a wreck dive with a RIPPING current. When you use a normal kick they move you along just fine. But when you put some energy into the kick, WOW! An amazing amount of thrust without knee pain. They feel a bit strange as they hit the stops at the root of the foot/fin junction but I soon forgot all about the "bump" as you dig into a strong kick. I bought XL as I'll be wanting to dive these with my dry suit too. In warm water I wear size 10 boots with a solid sole (think Bonaire shore dives). My boots match the length and width of my BARE D6 dry suit so I'll be able to use the fins for both cold and warm water dives. So far I'm very happy with these fins. One more thing, make these even better by replacing the adjustable straps with the rubber bungees. Too bad they don't offer stainless steel spring straps, but the rubber bungees work really well.
Commented 10/19/2023
This fin does not come with a spring strap but does come with a bungee strap which is similar to a spring strap.
Commented 10/19/2023
Yes, these are designed to be worn with dive boots.
Commented 07/05/2023
Thank you for asking, I have just reported the missing size chart to our web team. Mares has listed the following sizes (in men's sizing) for each fin: XS - Size 2.5 to 4 S - Size 5 to 7.5 Regular - Size 8.5 to 10 XL - Size 10.5 to 13.5 To convert these sizes to women's shoe sizes we recommend reducing the size by 1.5-2 sizes.
The Mares X-Stream Fins are designed for power, comfort, and efficiency. After years of research and four patented innovations, Mares created a fin that reduces drag and boosts performance.
The Optimized Pivoting Blade (OPB) system keeps the blade at the best angle throughout your kick, delivering steady thrust with less effort. The super-channel blade pushes more water with less energy, so you get strong propulsion without tiring your legs.
The riddled foot pocket improves fit and reduces suction, while vents prevent drag. Made with durable tri-material construction, these open-heel fins are a great pick for divers who want high performance and all-day comfort.
* The Pink variant is available only with ABS Buckle